I've never dipped my toe in the literary ocean that is Stephen King's prose, and I have to admit, the only movie based on his novels I like is The Shining, which he hates (and, of course his incomparable performance as Jordy Verrill in Creepshow). However, I do love me some dystopian futures, so, is this series worth a read before I give the show a try?
I myself stayed away from Mr. King's works as I was never into the horror genre, and I thought that's all what his books were about, ghosts, goblins and whatnot but then I read "11/22/63" and thought hmm that was rather good. I have now read some more of his books and I'm enjoying them so far. Which brings us to the dark tower series.
Is this series worth a read ? yes, it definitely is, but it is a very long read. I did not like the first book, The Gunslinger, all that much but there are others who say that its the best in the series. I was almost ready to stop reading after finishing the first book but am glad that I didn't as the story starts picking up steam in the second book, its a good old time once the gang is all together ;-).
I'm pretty sure the movie will butcher the book as most movies do, so if you watch the movie first, don't judge the book series based on that as the series is really very good